Hey guys, I'm a newbie to this site.
The other day, my girlfriend took her 2001 Holden Frontera to the mechanics to get a service, and advised her to get a timing belt changed sometime soon. It had done 172,000km.
A week couple weeks later, the clutch went so I replaced that alongside with a clutch slave cylinder.
Then, the one of the pulleys gave way and the fan belt shredded it's self, alongside the timing belt.
So, I replaced pulley, fan belt and timing belt and now it runs terrible! Underpowered, pop and back fires under 3,000 rpm (worse on a hot day) and engine light was on.
I thought it would be out of time, so I pulled it apart, realigned the timing belt on 3 separate occasions. Which nothing fixed it. I pulled the sparks out and test that all plugs and coil packs worked which they did.
I thought I was going crazy as I done everything to the book 4 times. So the new tensioner arrived, so i booked it into my mechanic and he realigned the belt installed the new tensioner and checked the error codes which returns with 'bank 1 running lean po171'
Although it didn't fix the problem, he said to do a compression test and replace spark plugs.
Compression test was between 155-160 psi across all 6 cylinders, new iridium plugs.
Still no good.
Took it back to the mechanic, he had no idea and said to take it to an ex Holden worker that now runs his own shop.
They replaced.fuel filter and said it had the same error code po171. And that I should go change o2 sensors and air flow meter.
I changed o2 and afm but still no better.
I can unplug afm and it doesn't change the way the motor runs.
So I decided to unplug coil packs individual whilst the motor was running, bank 2 (passenger side) when unplugging coil packs affects it idling but unplugging bank 1 (driver side) doesn't affect anything.
Bank 1 does spark though and i'm fairly certain it gets fuel as the old and new plugs are black and sooted, it smells like the fuels pouring straight out.the exhaust and it's using about 40-50l per 100km.
Any ideas or help would be much appreciated
Cheers guys!
The other day, my girlfriend took her 2001 Holden Frontera to the mechanics to get a service, and advised her to get a timing belt changed sometime soon. It had done 172,000km.
A week couple weeks later, the clutch went so I replaced that alongside with a clutch slave cylinder.
Then, the one of the pulleys gave way and the fan belt shredded it's self, alongside the timing belt.
So, I replaced pulley, fan belt and timing belt and now it runs terrible! Underpowered, pop and back fires under 3,000 rpm (worse on a hot day) and engine light was on.
I thought it would be out of time, so I pulled it apart, realigned the timing belt on 3 separate occasions. Which nothing fixed it. I pulled the sparks out and test that all plugs and coil packs worked which they did.
I thought I was going crazy as I done everything to the book 4 times. So the new tensioner arrived, so i booked it into my mechanic and he realigned the belt installed the new tensioner and checked the error codes which returns with 'bank 1 running lean po171'
Although it didn't fix the problem, he said to do a compression test and replace spark plugs.
Compression test was between 155-160 psi across all 6 cylinders, new iridium plugs.
Still no good.
Took it back to the mechanic, he had no idea and said to take it to an ex Holden worker that now runs his own shop.
They replaced.fuel filter and said it had the same error code po171. And that I should go change o2 sensors and air flow meter.
I changed o2 and afm but still no better.
I can unplug afm and it doesn't change the way the motor runs.
So I decided to unplug coil packs individual whilst the motor was running, bank 2 (passenger side) when unplugging coil packs affects it idling but unplugging bank 1 (driver side) doesn't affect anything.
Bank 1 does spark though and i'm fairly certain it gets fuel as the old and new plugs are black and sooted, it smells like the fuels pouring straight out.the exhaust and it's using about 40-50l per 100km.
Any ideas or help would be much appreciated
Cheers guys!